Noritz WHiC56 Service Manual
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Noritz WHiC56 Service Manual

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(L)WHiC56,(L)WHi49
(L)WHiCX56,(L)WHiX49
Service Manual
• This manual must be read by Service personnel repairing
the above appliance models.
• Take this manual with you when attending Service study
meetings.
• The specifications and contents of this manual may
change at any time without prior notification.
Never short-circuit any safety devices
Overview of Condensing Gas Water Heater ....................................................................................... 2
Hot Water Supply Capabilities ............................................................................................................. 3
Pressure Loss Characteristics ............................................................................................................. 5
Component Diagrams.......................................................................................................................... 6
Principle of Operation .......................................................................................................................... 10
Remote Controller ............................................................................................................................... 13
Initital Operation .................................................................................................................................. 15
Setting Hot Water Temperature ........................................................................................................... 16
Sequence ............................................................................................................................................ 17
Wiring Diagram .................................................................................................................................... 19
Checkpoints and Measures if a Breakdown Occurs ............................................................................ 21
Installation ........................................................................................................................................... 52
Regular Maintenance .......................................................................................................................... 56
Water Quality ....................................................................................................................................... 59
Procedure for Flushing the Heat Exchanger ....................................................................................... 60
Draining Water from Unit ..................................................................................................................... 61
Specifications ...................................................................................................................................... 64
Dimensions .......................................................................................................................................... 68
Installation Check ................................................................................................................................ 73
Parts .................................................................................................................................................... 77
INSTANTANEOUS GAS WATER HEATER
CONTENTS
Printed April, 2018
KS-18-0001

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Summary of Contents for Noritz WHiC56

  • Page 1: Table Of Contents

    INSTANTANEOUS GAS WATER HEATER Printed April, 2018 (L)WHiC56,(L)WHi49 (L)WHiCX56,(L)WHiX49 Service Manual • This manual must be read by Service personnel repairing the above appliance models. • Take this manual with you when attending Service study meetings. • The specifications and contents of this manual may change at any time without prior notification.

  • Page 2: Overview Of Condensing Gas Water Heater

    Overview of Condensing Gas Water Heater Overview of Condensing Gas Water Heater This water heater is a high effi ciency, fully condensing appliance. Unlike a traditional water heater, a condensing type captures heat from the exhaust gas and uses it to preheat the incoming cold water as it passes through the secondary heat exchanger as illustrated below.

  • Page 3: Hot Water Supply Capabilities

    Hot Water Supply Capabilities ■ (L)WHiC56,(L)WHiCX56 (Winter) Inlet water temp. 5°C Flow Rate (L/min) (Spring / Fall) Inlet water temp. 15°C 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 Flow Rate (L/min) (Summer) Inlet water temp.
  • Page 4 ■ (L)WHi49,(L)WHiX49 (Winter) Inlet water temp. 5°C Flow Rate (L/min) (Spring / Fall) Inlet water temp. 15°C 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 Flow Rate (L/min) (Summer) Inlet water temp. 25°C 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 Flow Rate (L/min) - 4 -...

  • Page 5: Pressure Loss Characteristics

    Pressure Loss Characteristics ■ (L)WHiC56,(L)WHiCX56 2.07 Bypass Flow Control Valve Close Bypass Flow Control Valve Open Set temperature : 55°C or higher Set temperature : 50°C or less 18.3 1.72 (Storage Tank Setting W/ System (Storage Tank Setting W/ System Controller : 75-80°C)

  • Page 6: Component Diagrams

    Component Diagrams ■ (L)WHiC56 - 6 -...
  • Page 7 ■ (L)WHiCX56 - 7 -...
  • Page 8 ■ (L)WHi49 - 8 -...
  • Page 9 ■ (L)WHiX49 - 9 -...

  • Page 10: Principle Of Operation

    Principle of Operation Condensing Model WHiC56,LWHiC56 WHiCX56,LWHiCX56 - 10 -...
  • Page 11 Standard Non Condensing Model WHi49,LWHi49 WHiX49,LWHiX49 - 11 -...
  • Page 12 ■ Explanation of operation 1.Using hot water (1) Turn the ON/OFF button on the remote controller to ON.(The ON/OFF button will turn on the light.) (2) Open the hot water valve to be used. If the water flow sensor detects a water flow above the mini- mum operation water flow volume, pre-purge(purging gas remaining in the combustion chamber before ignition) will be carried out for a fixed duration of time.

  • Page 13: Remote Controller

    Remote Controller Main Controller (RC-9018M) <Optional> The remote controller will emit a tone when a button is pressed. Alarm Off Button Prog Button / Indicator (Red) / Indicator (Red) Activates the automatic water heater power Stops the tone that is emitted when an error occurs.
  • Page 14 Screen Display * The screen display shown below is for illustration purposes only. The actual display will vary depending on how the water heater is being used. * After a button is pressed, the display will gradually become darker to prevent unnecessary power consumption by the remote controller.

  • Page 15: Initital Operation

    Initial Operation Before the fi rst use of your water heater, make the following preparations. 1 through 4 Follow steps Open the water supply valve. CLOSED OPEN Open a hot water fi xture to confi rm that water is available, and then close the fi...

  • Page 16: Setting Hot Water Temperature

    Setting Hot Water Temperature * If is displayed, hot water will be discharged at the temperature of the storage tank. Cover shown in the open position. Operation Screen Display Description * The indicator is lit. button is "ON". * The previously set hot water supply temperature is shown.

  • Page 17: Sequence

    Shutdown Heat Exchanger Thermistor Setting 60°C or higher open or shorted Exhaust Thermistor open or shorted Bypass Flow Control Valve < (L)WHiC56 only > closes Circuit board abnormality Hot water fixture opened Gas Proportioning Valve drive circuit abnormality Flame Rod circuit abnormality...
  • Page 18 (Thermal fuse) abnormality (check for Thermistor abnormality open or shorted < (L)WHiC56 only> < (L)WHiC56 only > triggered (221°C or more) blockage and Flow is adjusted electrode connections) < Condensing Model only > Safety device triggered...

  • Page 19: Wiring Diagram

    Wiring Diagram - 19 -...
  • Page 20 - 20 -...

  • Page 21: Checkpoints And Measures If A Breakdown Occurs

    Check for improper connection of Heat Exchanger Thermistor. (F) 35 Exhaust Thermistor abnormality Measure the resistance through the Exhaust Thermistor ( 8 ). < (L)WHiC56 only > Check for an open or short circuit. Check for improper connection of Exhaust Thermistor. (F) 51 Failure of Gas Solenoid Valve Check for proper connection of the Gas Solenoid Valves.
  • Page 22 ■ Troubleshooting Important Safety Information To prevent damage to property and injury to the user, the icons below warn of varying levels of risk. Ignoring this indication will cause an immediate danger of death or Warning serious injury. Caution Ignoring this indication may result in death or serious injury. Prohibited.
  • Page 23 (F)90 40,41,42 Combustion abnormality (F)94 Exhaust temperature is too high <(L)WHiC56 only> (F)99 Combustion abnormality (Appliance is stopped) * In a Quick Connect Multi-System, “F##” (except F76) indicates an error code from the secondary unit (unit without a remote controller).

  • Page 24: No Error Code

    1. No Error Code 1-1. The operation indicator does not light when the ON/OFF button is pressed. Check the power outlet voltage. AC198 - 242V Abnormal (Activated) Check the activation of the indoor Turn the breaker on. AC207 - 253V distribution board breaker.
  • Page 25 Check the current fuse. * Unplug the power cord when checking. Circuit Board Normal (Not blown) Abnormal POWER <CN102> (Blown) CIRCUIT BOARD <CN104> <CN27> <CN92> <CN103> <FUSE 10A> <FUSE 10A> Lightning protection's Transformer Relay wiring Relay wiring Power cord To PCB Check point To anti-frost heater Fuse (5A)

  • Page 26: The Fan Does Not Operate When Hot Water Fixture Is Opened

    1-2. The fan does not operate when the hot water fixture is opened. Check whether the Water Flow Sensor is normal. Circuit Board Normal Abnormal Open the hot water fixture fully. <CN186> <CN42> MAIN Confirm 2.0 L/min. or more by CIRCUIT <CN101>...

  • Page 27: Outlet Water Temperature Incorrect

    1-3. Outlet water temperature incorrect Only connect and disconnect the connector after the fan has stopped rotating and then disconnect the electrical power. (The Circuit Board and Fan Motor may be damaged otherwise.) Check whether the Water inlet / Water outlet / Heat exchanger Thermistor are normal. Normal Abnormal Abnormal...
  • Page 28 Open the hot water fixture, and confirm the display of remote controller. Normal Abnormal (Operation indicator (Show 66) (Not show 66)) Check the voltage of the bypass flow control valve. Abnormal Replace the circuit board set. (Check while the bypass flow control valve is activating, for example when the "Operation"...
  • Page 29 During combustion, press the "maximum burner pressure set button" and check whether all the burners combusts. Normal Abnormal * The procedure of Burner Gas Adjustment is described in page **. Check the voltage of Gas Solenoid Abnormal Valve-1 (SV1), Gas Solenoid Valve-2 (SV2), Replace the Circuit Board set.

  • Page 30: Error Code Displayed

    After using for 5 years or the equivalent, the error message is (Output drop and warning indication only) displayed if the initial fan speed correction is 103% ((L)WHiC56, (L)WHiCX56), 104% ((L)WHi49, (L)WHiX49) or more. * Warning indication : Regardless of whether the ON/OFF button is (Output drop, continue combustion.)
  • Page 31 Abnormal Check whether the primary Check the gas supply valve, etc. gas pressure is normal. * Check the primary pressure (dynamic pressure) at the time of maximum combustion. Normal Primary gas pressure list Gas group ULPG Pressure Maximum pressure Minimum 2.75 1.13 pressure...
  • Page 32 Check the resistance between the terminals of Abnormal Replace the Gas Valve. the Gas Proportioning Valve. Normal When measuring the resistance, disconnect CN101 : Between Red 7 - Blue 6 the connector and check the male side. 50 - 90 Possible Recheck after adjusting Check whether the manifold gas pressure can be...

  • Page 33: Flame Rod Does Not Detect Flame (Flame Fault Detection)

    <The occurrence condition for error Code 12> Error Code 12 Flame Rod does not detect flame The message is displayed if no flame can be detected by the flame (Flame fault detection) rod during combustion. The trouble diagnosis for “Error Code 12” is same as “Error Code 11”. Error Code 14 Overheat Prevention Device (Thermal Fuse) triggered Check the overheat prevention device (Thermal Fuse) resistance.

  • Page 34: (F)16 Abnormally High Output Temperature

    <The occurrence condition for error code 16> Error Code 16 Abnormally high output temperature The error message appears if one of the following conditions is present: - To prevent water at high temperatures from being output, if the output water temperature is 90°C or more. - If water 60°C or more is output when the set temperature is 50°C or less.

  • Page 35: (F)29 Clogging Of Condensate Container (Water Level Electrode Shorted)

    Error Code 29 Clogging of condensate (Water level electrode shorted) <(L)WHiC56, (L)WHiCX56 only> <Condition of occurrence for error code 29> Check the drain line is clogged or frozen. The error message is displayed if water level electrode is shorted. Normal...

  • Page 36: (F)32 Water Outlet Thermistor Abnormality

    Error Code 32 Water outlet thermistor abnormality Check the Water outlet thermistor open or short circuit. Circuit Board Normal Abnormal CN63 : Between White 1 - White 2 <CN186> <CN42> MAIN DC 1 - 4.5V CIRCUIT <CN101> Resistance : Refer to the table below. BOARD When measuring the resistance, <CN78>...

  • Page 37: Exhaust Thermistor Abnormality <(L)Whic56 Only

    Error Code 35 Exhaust thermistor abnormality <(L)WHiC56 only> Check the Exhaust thermistor open or short circuit. Circuit Board Normal Abnormal CN63 : Between White 7 - White 2 <CN186> <CN42> MAIN Resistance, Voltage : Refer to the table below. CIRCUIT <CN101>...

  • Page 38: (F)61 Fan Motor Abnormality

    Error Code 61 Fan Motor abnormality Only connect and disconnect the connector after the fan has <Condition of occurrence for error code 61> stopped rotating and then disconnect the electrical power. When the Unit is in following conditions, the error code is displayed. (The Circuit Board and Fan Motor may be damaged otherwise.) - If the fan speed is 200rpm more or less than the target speed during iginition or pre purge.

  • Page 39: (F)65 Main Flow Control Valve Abnormality

    Error Code 65 Main flow control valve abnormally Same matter from error message 65, page 6. Error Code 66 Bypass flow control valve abnormally Same matter from error message 66, page 7. Error Code 70 Circuit Board abnormality Disconnect the electrical power, then reconnect electrical power to the Unit to reset the system. If the Circuit Board abnormality is continuous, replace the Circuit Board set.

  • Page 40: (F)760 Remote Controller Transmission Abnormality

    Error Code 760 Remote Controller transmission abnormality Check the voltage of Remote Controller terminal on Circuit Board. Normal Abnormal Circuit Board Blue 1 - Blue 3 <CN186> <CN42> MAIN DC14-16V CIRCUIT <CN101> BOARD Remove the Remote Controller cord. <CN78> 9 10 <CN10>...
  • Page 41 <Condition of occurrence for error code 90> 90 Combustion abnormality “Output/FF+FB No. 50%” (Maintenance No.52 / Maintenance No. 51 50%) Only connect and disconnect the connector after the fan has stopped rotating and then disconnect the electrical power. (The Circuit Board and Fan Motor may be damaged otherwise.) Abnormal To correct the setting Check the Dip Switch settings.
  • Page 42 (maintenance monitor No. 48 nad No. 49) Normal Abnormal Investigate the cause for the combustion abnormality (fan clogging, fan sirocco abnormalities, etc.). (100 - 104% : (L)WHiC56, (L)WHiCX56, 106% : (L)WHi49, (L)WHiX49) Replace the Circuit Board set. - 42 -...

  • Page 43: Exhaust Temperature Is Too High <(L)Whic56 Only

    Error Code 94 Exhaust temperature is too high <(L)WHiC56 only> <The occurrence condition for error code 94> The message is displayed if exhaust temperature is 60°C or more. Check the exhaust thermistor resistance. Normal Abnormal CN63 : Between White 7 - White 2...
  • Page 44 Remote Controller RC-9018M Displaying Maintenance Monitors <Display Procedure> 1. Press and hold both the up [ ] and down [ ] setting buttons simultaneously for more than 5 seconds. This can be done regardless of whether the power has been turned on or the unit is operating.
  • Page 45 X 0.1 °C 0.5°C Detection Temperature Heat Exchanger Thermistor X 0.1 °C 0.5°C Detection Temperature Exhaust Thermistor < (L)WHiC56 only > °C 1°C Detection Temperature Air Inlet Thermistor °C 1°C Detection Temperature Error Code History 1 Most Recent Error Code...
  • Page 46 : ON : OFF ) DIP Switches No.7 and No.8 details < Internal model only> WHi49,LWHi49 model Type:B only WHi49,LWHi49 model Select High elevation Flue length WHiC56,LWHiC56 model Type:B23 adjustment* Type:C only results adjustment adjustment* Type:C Type:B SW7 SW8 Minimum length...
  • Page 47 MENU Button Display b) Turn MWs "2E" ON. c) If your unit is WHiC56 or LWHiC56 turn MWs "1B " and "37" ON. d) If your unit is WHiCX56 or LWHiCX56 turn MWs " 37 " ON. ENTER Button e ) Turn MWs "FC" and "FE" ON and press the UP or DOWN button. (Display blinks with "A0".)
  • Page 48 Drain Trap Replacement Replace the Drain trap following the procedures below. 1. Disconnect electrical power to the unit. 2. Drain water from the Drain trap using the drain valve located underneath the water heater (Fig.). 3. Disconnect the relay connector(2 positions), remove the fixing screw, and remove drain hose 1 and drain hose 2.
  • Page 49 - 49 -...
  • Page 50 - 50 -...
  • Page 51 (mbar) Max value Min value WHi49 LWHi49 30/37 WHiX49 LWHiX49 30/37 10.0 WHiC56 LWHiC56 30/37 WHiCX56 LWHiCX56 30/37 * Burner gas pressure values are subject to change without prior notice. Please check the latest burner specification table. - 51 -...

  • Page 52: Installation

    Installation ■ Filling the drain trap unit with water The drain trap unit can be fi lled before connecting the vent pipe. Filling the drain trap unit before vent pipe installation. Prior to initial start up, make sure that you fi ll the drain trap unit with water. DANGER This is to prevent dangerous exhaust gases from entering the building.
  • Page 53 ■ Condensate Piping CAUTION Due to the acidic nature of the condensate, be sure to properly drain and if necessary, treat the condensate prior to disposal. Damage caused by improperly handled condensate is not covered by the warranty. • This water heater is a high effi ciency, fully condensing appliance which produces acidic condensate during operation.
  • Page 54 Condensate piping to floor drain Condensate piping with pump DO NOT ADD DO NOT ADD ANY VALVES ANY VALVES 1/2" Plastic pipe 1/2" Plastic pipe (such as PVC) (such as PVC) 1/2" Plastic elbow Slope pipe downwards 3/8" ID tubing* (such as PVC) The end of the drain pipe 1/50...
  • Page 55 ■ Flue Terminal Installation • VERTICAL FLUE TERMINAL Pitched roof Straight roof Flat roof Air and flue Pitched roof adapter Air and flue adapter • HORIZONTAL FLUE TERMINAL (SHORT) • HORIZONTAL FLUE TERMINAL (LONG) Standard length cut to 7000 4 x 90 Maximum length with bends...

  • Page 56: Regular Maintenance

    Regular Maintenance Inspection (Once a month) CAUTION To avoid burns, wait until the equipment cools down before draining the water. The appliance will remain hot after it is turned off. High Temperature For dust and soot in the Check exhaust vent or fl ue terminal. For abnormal sounds Check during operation.
  • Page 57 Performance CAUTION To prevent burns or scalding, turn off the power button and wait until the equipment cools before performing maintenance. Be sure to do. For dust and soot in For laundry, newspaper, Check Check the flue exhaust. timber, oil, spray cans and other combustible materials.
  • Page 58 Packing 2. Open all hot water fi xtures. 3. Remove the inlet and outlet drain plugs (about 1.7 L: (L)WHiCX56 and (L)WHiC56, 0.8L: (L)WHiX49 and (L)WHi49, will drain out) 4. Take the water drain valve (with water fi lter) out Drain Valve of the inlet.

  • Page 59: Water Quality

    Water Quality If the heater is in a hard water area a suitable water conditioning device must be installed to prevent the build up of limescale within the heat exchanger. Heat exchangers damaged by scaling are not covered by the manufacturer’s warranty. WATER QUALITY TABLE Maximum levels Total...

  • Page 60: Procedure For Flushing The Heat Exchanger

    Procedure for Flushing the Heat Exchanger Flushing the heat exchanger. button is "ON". Set the temperature more than 60 degrees. K EY Pressure Regulator 3/4" Ball Valve Circulating Pump 3/4" Union Push button again, and water heater turns off. Check Valve Boiler Drain Valve Pressure Relief Valve Solenoid Valve...

  • Page 61: Draining Water From Unit

    Draining Water from Unit ■ Preventing Damage from Freezing The heater and piping can be damaged if cold temperatures cause water to freeze inside the unit. The damage can be prevented with the following method: Normal cold [ outside temperatures between 0°C - 10°C with no wind At these temperatures, the units have freeze prevention heaters that will prevent freezing.
  • Page 62 ■ When Unused for an Extended Period If the water heater will not be used for a long period of time, drain the water. If you do not use the product for long time, contact your CAUTION nearest agency. Because the operation in equipment is necessary for complete drainage. Whenever the unit is checked, maintained, or drained, the power CAUTION switch must be turned “Off”, and it must be allowed to cool down fi...
  • Page 63 If the water heater will not be used for a long period of time, drain the water. Position of the cleanout plugs 3 positions * The shapes of the cleanout plugs are as pictured on the right. * The cleanout plugs may not be clearly visible as they are partially hidden behind the pipe insulation.

  • Page 64: Specifications

    • Specifications may be changed without prior notice. • The capacity may differ slightly, depending on the water pressure, water supply, piping conditions, and water temperature. Specifi cations Item Specifi cation Model Name WHiC56 LWHiC56 Type Installation Internal, Wall Mounted Air Supply/Exhaust...
  • Page 65 Specifi cations Item Specifi cation Model Name WHiCX56 LWHiCX56 Type Installation External, Wall Hanging Air Supply/Exhaust Power Vented Direct Ignition Ignition Minimum Pressure for Maximum fl ow 2.0 bar Minimum Flow Rate 2.0 L/min. Dimensions 61.5 cm(Height) x 46.4 cm(Width) x 24 cm(Depth) Weight 32 kg Water Holding Capacity...
  • Page 66 Specifi cations Item Specifi cation Model Name WHi49 LWHi49 Type Installation Internal, Wall Mounted Air Supply/Exhaust Power Vented Direct Ignition Ignition Minimum Pressure for Maximum fl ow 2.0 bar Minimum Flow Rate 2.0 L/min. Dimensions 60 cm(Height) x 35 cm(Width) x 28 cm(Depth) Weight 28 kg Water Holding Capacity...
  • Page 67 Specifi cations Item Specifi cation Model Name WHiX49 LWHiX49 Type Installation External, Wall Hanging Air Supply/Exhaust Power Vented Direct Ignition Ignition Minimum Pressure for Maximum fl ow 2.0 bar Minimum Flow Rate 2.0 L/min. Dimensions 60 cm(Height) x 35 cm(Width) x 24 cm(Depth) Weight 26 kg Water Holding Capacity...

  • Page 68: Dimensions

    Dimentions ■ (L)WHiC56 (VIEW FROM TOP) <Unit : mm> GAS INLET(R3/4) HOT WATER OUTLET(R3/4) COLD WATER INLET(R3/4) CONDENSATE DRAIN (R1/2) WIRING THROUGHWAYS 4-φ13 6-6×10 OBLONG HOLE φ101.3 φ101.3 FLUE COLLAR AIR INLET TOP OF CASE TOP OF CASE WATER DRAIN VALVE...
  • Page 69 ■ (L)WHiCX56 (VIEW FROM TOP) <Unit : mm> GAS INLET(R3/4) COLD WATER INLET(R3/4) HOT WATER OUTLET(R3/4) DRAIN OUTLET(R1/2) WIRING THROUGHWAYS 4-φ13 6-6×10 OBLONG HOLE FLUE COLLAR AIR INLET AIR INLET WATER DRAIN VALVE WIRING THROUGHWAYS (WATER FILTER) DRAIN OUTLET WATER DRAIN VALVE GAS INLET 6-6×10 OBLONG HOLE WATER DRAIN VALVE...
  • Page 70 ■ (L)WHi49 (VIEW FROM TOP) <Unit : mm> HOT WATER OUTLET(R3/4) COLD WATER INLET(R3/4) 64.8 GAS INLET(R3/4) WIRING THROUGHWAY 6-6×10 OBLONG HOLE 10 - 45 φ125.5 AIR INLET FLUE COLLAR φ81 CONDENSATE DRAIN 2-φ13 5-φ13 10 - 45 GAS INLET WIRING THROUGHWAY 2-6.5×13 OBLONG HOLE COLD WATER INLET...
  • Page 71 ■ (L)WHiX49 (VIEW FROM TOP） <Unit : mm> HOT WATER OUTLET (R3/4) COLD WATER INLET (R3/4) GAS INLET (R3/4) WIRING THROUGHWAY 2-6.5x13 OBLONG HOLE 10.8 FLUE COLLAR 4-Φ13 AIR INLET 4-Φ13 AIR INLET WIRING THROUGHWAYS 3-6.5x16.5 OBLONG HOLE WATER DRAIN VALVE (WATER FILTER) GAS INLET COLD WATER INLET...
  • Page 72 ■ RC-9018M - 72 -...

  • Page 73: Installation Check

    Installation Check Installation problems can cause the unit to work unsatisfactorily. If the unit is not working properly, but there are no error codes or evidence of malfunction, check the installation. * Installation Checks: Altitude 1. If this water heater is installed in a location where the altitude is greater than 610m, the combustion may become abnormal because of the thinness of the air.
  • Page 74 * Installation Cautions Gas Supply Piping Because a large quantity of gas is used with these appliances, make sure to size the gas meter and supply piping to match the maximum KW rating of the heater. Air Supply and Vent Pipe Before installation, note the following: Vent pipe diameters and maximum vent length *Refer to the installation manual for proper settings.
  • Page 75 Electrical • The electrical power supply to the unit should be installed bu\y a quali ed electrician. • Allocate 4A on the circuit for this water heater. If more than one unit is being installed, allocate an appropriate circuit to provide power for each unit. Condensate Piping CAUTION Due to the acidic nature of the condensate, be sure to properly drain and if necessary, treat the condensate...
  • Page 76 Condensate piping to floor drain Condensate piping with pump DO NOT ADD DO NOT ADD ANY VALVES ANY VALVES 1/2" Plastic pipe (such as PVC) 1/2" Plastic pipe (such as PVC) 1/2" Plastic elbow Slope pipe downwards 3/8" ID tubing* (such as PVC) The end of the drain pipe 1/50...

  • Page 77: Parts

    Parts External outfitting (L)WHiC56 - 77 -...
  • Page 78 External outfitting (L)WHiCX56 - 78 -...
  • Page 79 External outfitting (L)WHiC56 ・ (L)WHiCX56 Part Nos. Part Names Order Nos. Q'ty/unit Front Cover - WHIC56 AD UK(SET) SKJ7275 1<(L)WHiC56> Front Cover - WHICX56 AD UK(SET) SKJ7274 1<(L)WHiCX56> Gasket - Front Cover Top and Bottom AAPL015 Gasket - Front Cover Sides AAPL017 Mounting Plate - Terminal Block and/or GFCI DZTA006 Sight Glass Window DECK008 Wiring Harness - Remote Terminals CCPJ028 Wiring Harness - Earth Connect Cord EGHJ028 Transformer FAFJ001 Lightning Protection FAFJ002 Wiring Diagram FBUK005 Label - Outside Case Caution Label ELEK077 1<(L)WHiC56> Label - Outside Case Caution Label ELEK062 1<(L)WHiCX56> Label - Terminal Block Cover EGHK010 Exhaust Flue Adapter EPJF011 1<(L)WHiC56>...
  • Page 80 Combustion unit and gas route (L)WHiC56 ・ (L)WHiCX56 Part number 136  includes 1 of part  number 135. - 80 -...
  • Page 81 Combustion unit and gas route (L)WHiC56 ・ (L)WHiCX56 Part Nos. Part Names Order Nos. Q'ty/unit Burner w/ Gasket and Ignition Plug (SET) SKH7184 Gasket - Burner ESWL001 Ignition Plug w/ Gasket SKG7311 Mounting Plate - Ignition Plug ESWC011 Gasket - Ignition Plug EHKL001 Gas Pipe (SET) SKJ70Q9 Burner Damper 17-13 EFWC033 1<LWHiC56・LWHiCX56> Burner Damper 17-14 EFWC034 1<WHiC56・WHiCX56> Fan Motor w/ Housing SKD7441 1<(L)WHiC56> Fan Motor w/ Housing SKC7470 1<(L)WHiCX56> Gasket - Manifold Plate Top ERDL007 Gasket - Manifold Plate Bottom ERDL009 Fan Plate φ40 EHKF424 1<(L)WHiC56> Fan Plate φ48 CRUC046 1<(L)WHiCX56>...
  • Page 82 Hot-water feed route 1 (L)WHiC56・(L)WHiCX56 Part number 400 includes 1  each of part numbers  101,475,461 and 2 of part  number 441. 442 448 - 82 -...
  • Page 83 Hot-water feed route 2 (L)WHiC56 Part number 472 includes 1 of  part number 475 and 2 of part  number 441. - 83 -...
  • Page 84 Hot-water feed route 2 (L)WHiCX56 Part number 472 includes 1 of  part number 475 and 2 of part  number 441. - 84 -...
  • Page 85 Hot-water feed route (L)WHiC56・(L)WHiCX56 Part Nos. Part Names Order Nos. Q'ty/unit Heat Exchanger Kit (SET) SKJ71XH Thermal Fuse SKH7189 Freeze Prevention Heater - Round Short ERDH003 Freeze Prevention Heater - Double Round (SET) SKJ71X8 High Limit Switch DJPH002 Water Flow Sensor (SET) ERDD011 Water Servo - Bypass (SET) SKH7202 Water Servo -Main (SET) ETFD011 Outlet Water Connection (SET) FAFD001 Inlet Water Connection (SET) EACD006 Thermistor - White - M64 BWCD096 Drain Cock CRUD003 Wire Cover - Servo EBTD023 O-Ring - Thermistor High Temp P4 1323709 Thermistor Holding Plate ALSD088 Magnetic Sensor - Flow Sensor BWCD090 Thermistor - White - Q63 BWCD097 Thermistor - White - Q64 BWCD098 Water Filter Cap...
  • Page 86 Hot-water feed route (L)WHiC56・(L)WHiCX56 Part Nos. Part Names Order Nos. Q'ty/unit Pipe - Flow Sensor to SS Heat Exchanger ETPD001 Pipe - 1/4" Drain from Heat Exchanger (SET) ETPD009 Cover - Condensate Container ETPA071 Cover - Waterproof DTJL009 Clamp - Freeze Prevention DLKH005 Clamp - Freeze Prevention ELVL011 Clamp - Wire Tie HBNL001 Safety Relief Valve EGGD029 Screw - Round Head Medium Tapping M4X10 S305 Screw - Round Head Medium Tapping M4X10 S410 Screw - Black Set M4X8 S430 - 86 -...
  • Page 87 Electronic control unit and Remote controller, Attached set (L)WHiC56・(L)WHiCX56 Electronic control unit For (L)WHiC56 For (L)WHiC56 W FAF For (L)WHiCX56 FF FAF For (L)WHiC56 For (L)WHiC56 Remote controller Attached set RC-9018M EU For (L)WHiC56 <Special part> Special part Special part no. Owner's guide Installation manual - 87 -...
  • Page 88 Electronic control unit and Remote controller, Attached set (L)WHiC56・(L)WHiCX56 Part Nos. Part Names Order Nos. Q'ty/unit Circuit Board SHC718F Cover - Circuit Board ERDJ008 Cover - Circuit Board Water Resistant ETHA023 Wiring Harness FAFJ031 1<(L)WHiC56> Wiring Harness FAFJ011 1<(L)WHiCX56> LED Light CRPJ014 Remote Controller - RC-9018M (SET) SKJ72A8 Cover - Remote SKJ72A9 Mounting Plate - Remote RC-9018M QQNA021 Dry Wall Anchors6X25 Screw - Round Head Machine M3X6 S430 Screw Package - RC 9018M (SET) QQNA100 Screw - Flat Head Machine M4X35 Screw - Flat Head Tapping 4X20 Screw - Round Head Machine M3X6 SKJ72A7 1<(L)WHiC56> SKJ7278 1<(L)WHiCX56> Wood Screw set5 SAF6007 Screw - Round Head Wood 4.8X38 S305 Clamp - Drain Hose (External)
  • Page 89 External outfitting (L)WHiX49 - 89 -...
  • Page 90 External outfitting (L)WHi49 - 90 -...
  • Page 91 External outfitting (L)WHiX49 ・ (L)WHi49 Part Nos. Part Names Order Nos. Q'ty/unit Front Cover - WHIX49 AD UK(SET) SKJ7272 1<(L)WHiX49> Front Cover - WHI49 AD UK(SET) SKJ7273 1<(L)WHi49> Gasket - Front Cover Top and Bottom EAAL002 2<(L)WHiX49> Gasket - Front Cover Sides AAPL017 2<(L)WHiX49> Mounting Plate - Terminal Block and/or GFCI DZTA006 Sight Glass Window DECK008 Wiring Harness - Remote Terminals CCPJ028 Wiring Harness - Earth Connect Cord EGHJ028 Transformer FAFJ001 Lightning Protection FAFJ002 Wiring Diagram FBUK005 Label - Outside Case Caution Label ELEK062 1<(L)WHiX49> Label - Outside Case Caution Label ELEK077 1<(L)WHi49> Label - Terminal Block Cover EGHK010 Seal - Sight Glass Window BUBK004...
  • Page 92 Combustion unit and gas route (L)WHiX49 ・ (L)WHi49 For (L)WHi49 Part number 136  includes 1 of part  number 135. - 92 -...
  • Page 93 Combustion unit and gas route (L)WHiX49 ・ (L)WHi49 Part Nos. Part Names Order Nos. Q'ty/unit Burner w/ Gasket and Ignition Plug (SET) SKH7184 1<(L)WHiX49> Burner w/ Gasket and Ignition Plug (SET) SKH7211 1<(L)WHi49> Gasket - Burner ESWL001 Ignition Plug w/ Gasket SKG7311 Mounting Plate - Ignition Plug ESWC011 Gasket - Ignition Plug EHKL001 Gas Pipe (SET) SKJ70Q9 Burner Damper 17-13 EFWC033 1<LWHiX49・LWHi49> Burner Damper 17-14 EFWC034 1<WHiX49・WHi49> Fan Motor w/ Housing SKC7470 1<(L)WHiX49> Fan Motor w/ Housing SKH7214 1<(L)WHi49> Gasket - Manifold Plate Top ERDL007 Gasket - Manifold Plate Bottom ERDL009 Fan Plate φ44 CRUC045 1<(L)WHiX49>...
  • Page 94 Hot-water feed route (L)WHiX49 Part number 400 includes 1  each of part numbers 101,418  and 3 of part number 441. 442 448 442 444 - 94 -...
  • Page 95 Hot-water feed route (L)WHi49 Part number 400 includes 1  each of part numbers  045,101,418 and 3 of part  number 441. 442 448 442 444 - 95 -...
  • Page 96 Hot-water feed route (L)WHiX49 ・ (L)WHi49 Part Nos. Part Names Order Nos. Q'ty/unit Heat Exchanger Kit (SET) SKJ71XL 1<(L)WHiX49> Heat Exchanger Kit (SET) SKJ71XM 1<(L)WHi49> Thermal Fuse SKH7189 Freeze Prevention Heater - Round Short BGDH002 Freeze Prevention Heater - Double Round (SET) SKJ71X8 High Limit Switch DJPH002 Water Flow Sensor (SET) ERDD011 Water Servo - Bypass (SET) ETFD010 Water Servo -Main (SET) ETFD011 Outlet Water Connection (SET) EGGD024 Inlet Water Connection (SET) EACD006 Thermistor - White - M64 BWCD096 Wire Cover - Servo EBTD023 O-Ring - Thermistor High Temp P4 1323709 Thermistor Holding Plate ALSD088 Magnetic Sensor - Flow Sensor BWCD090 Thermistor - White - Q63 BWCD097...
  • Page 97 Electronic control unit and Remote controller, Attached set  (L)WHiX49・(L)WHi49 Electronic control unit FAG-A Remote controller Attached set RC-9018M EU For (L)WHi49用 <Special part> Special part Special part no. Owner's guide Installation manual - 97 -...
  • Page 98 Electronic control unit and Remote controller, Attached set  (L)WHiX49・(L)WHi49 Part Nos. Part Names Order Nos. Q'ty/unit Circuit Board SHC718F Cover - Circuit Board ERDJ008 Cover - Circuit Board Water Resistant ETHA023 Wiring Harness FAGJ111 LED Light CRPJ014 Remote Controller - RC-9018M (SET) SKJ72A8 Cover - Remote SKJ72A9 Mounting Plate - Remote RC-9018M QQNA021 Dry Wall Anchors6X25 Screw - Round Head Machine M3X6 S430 Screw Package - RC 9018M (SET) QQNA100 Screw - Flat Head Machine M4X35 Screw - Flat Head Tapping 4X20 Screw - Round Head Machine M3X6 SKJ7276 1<(L)WHiX49> SKJ7277 1<(L)WHi49> Wood Screw set5 SAF6007 Screw - Round Head Wood 4.8X38 S305 Clamp - Drain Hose (External) 1230701 1<(L)WHi49> Hose - Drain (External) AHED061 1<(L)WHi49>...

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